Allen-Bradley 1794-VHSC Flex I/O Very High Speed Counter Module 5V DC / 24V DC
Allen-Bradley 1794-VHSC Flex I/O Very High Speed Counter Module 5V DC / 24V DC
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Estimated package weight: 5.0 lbs
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Product Specifications
- Manufacturer: Allen-Bradley
- MPN / Model: 1794-VHSC
- Product Type: Very High Speed Counter Module
- Series: Flex I/O
- Series Revision: A
- Input Channels: 2
- Input Voltage: 5V DC or 15 to 24V DC
- Input Frequency: Up to 1 MHz
- Outputs: 2 isolated outputs, 2 groups
- Output Rating: 0.5A at 5V DC; 1.0A at 12 to 24V DC
- Mounting Type: DIN Rail
- Enclosure Rating: IP20 (Open Style)
- UPC: 612598205493
Product Description
The Allen-Bradley 1794-VHSC is a Flex I/O Very High Speed Counter Module, catalog number 1794-VHSC, Series A. It provides two independent input channels capable of counting pulse inputs at frequencies up to 1 MHz, with support for 5V DC or 15 to 24V DC terminations. The module supports multiple operating modes including counter, encoder X1, X2, and X4, and period/rate measurement. Two isolated output groups are included, rated at 0.5A at 5V DC and 1.0A at 12 to 24V DC. The module mounts on DIN rail in an open-style IP20 enclosure and connects to the Flex I/O bus via a terminal base such as the 1794-TB3G or 1794-TB3GS. This listing is for a used, field-removed unit. Buyers matching this exact catalog number for replacement, maintenance sourcing, or spare inventory should confirm series and terminal base compatibility with their existing system configuration. The successor replacement identified by Rockwell Automation is the 5094-HSC.
Please Note: This unit is surplus inventory, sold as-is from MRO Exchange surplus stock. Allen-Bradley is a trademark of Rockwell Automation, Inc. MRO Exchange is an independent reseller and is not an authorized distributor of Rockwell Automation. Product may differ from units available through authorized distributors in date code, country of origin, packaging, accessories, or firmware revision. The warranty from the manufacturer does not apply.

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Returns & Condition
All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.
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